<template>
    <el-card class="main-card">
        <div class="title">{{ this.$route.name }}</div>
        <!-- 表格操作 -->
        <div class="operation-container">
            <el-button type="primary" size="small" icon="el-icon-plus" @click="openModel(null)">
                新增
            </el-button>
            <el-button type="danger" size="small" icon="el-icon-delete" :disabled="linkIdList.length == 0"
                       @click="deleteFlag = true">
                批量删除
            </el-button>
            <!-- 条件筛选 -->
            <div style="margin-left:auto">
                <el-input v-model="keywords" prefix-icon="el-icon-search" size="small" placeholder="请输入友链名"
                          style="width:200px" @keyup.enter.native="searchLinks"/>
                <el-button type="primary" size="small" icon="el-icon-search" style="margin-left:1rem"
                           @click="searchLinks">
                    搜索
                </el-button>
            </div>
        </div>
        <!-- 表格展示 -->
        <el-table border :data="linkList" @selection-change="selectionChange" v-loading="loading">
            <!-- 表格列 -->
            <el-table-column type="selection" width="55"/>
            <el-table-column prop="linkAvatar" label="链接头像" align="center" width="180">
                <template slot-scope="scope">
                    <img :src="scope.row.linkAvatar" width="40" height="40"/>
                </template>
            </el-table-column>
            <el-table-column prop="linkName" label="链接名" align="center"/>
            <el-table-column prop="linkAddress" label="链接地址" align="center"/>
            <el-table-column prop="linkIntro" label="链接介绍" align="center"/>
            <el-table-column prop="createTime" label="创建时间" width="140" align="center">
                <template slot-scope="scope">
                    <i class="el-icon-time" style="margin-right:5px"/>
                    {{ scope.row.createTime | date }}
                </template>
            </el-table-column>
            <!-- 列操作 -->
            <el-table-column label="操作" align="center" width="160">
                <template slot-scope="scope">
                    <el-button type="primary" size="mini" @click="openModel(scope.row)">
                        编辑
                    </el-button>
                    <el-popconfirm title="确定删除吗？" style="margin-left:1rem" @confirm="deleteLink(scope.row.id)">
                        <el-button size="mini" type="danger" slot="reference">
                            删除
                        </el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页 -->
        <el-pagination class="pagination-container" background @size-change="sizeChange"
                       @current-change="currentChange" :current-page="current" :page-size="size" :total="count"
                       :page-sizes="[10, 20]" layout="total, sizes, prev, pager, next, jumper"/>
        <!-- 批量删除对话框 -->
        <el-dialog :visible.sync="deleteFlag" width="30%">
            <div class="dialog-title-container" slot="title">
                <i class="el-icon-warning" style="color:#ff9900"/>提示
            </div>
            <div style="font-size:1rem">是否删除选中项？</div>
            <div slot="footer">
                <el-button @click="deleteFlag = false">取 消</el-button>
                <el-button type="primary" @click="deleteLink(null)">
                    确 定
                </el-button>
            </div>
        </el-dialog>
        <!-- 添加对话框 -->
        <el-dialog :visible.sync="addOrEdit" width="30%">
            <div class="dialog-title-container" slot="title" ref="linkTitle"/>
            <el-form label-width="80px" size="medium" :model="linkForm">
                <el-form-item label="链接名">
                    <el-input style="width:250px" v-model="linkForm.linkName"/>
                </el-form-item>
                <el-form-item label="链接头像">
                    <el-input style="width:250px" v-model="linkForm.linkAvatar"/>
                </el-form-item>
                <el-form-item label="链接地址">
                    <el-input style="width:250px" v-model="linkForm.linkAddress"/>
                </el-form-item>
                <el-form-item label="链接介绍">
                    <el-input style="width:250px" v-model="linkForm.linkIntro"/>
                </el-form-item>
            </el-form>
            <div slot="footer">
                <el-button @click="addOrEdit = false">取 消</el-button>
                <el-button type="primary" @click="addOrEditCategory">
                    确 定
                </el-button>
            </div>
        </el-dialog>
    </el-card>
</template>

<script>
export default {
    created() {
        this.listLinks();
    },
    data: function () {
        return {
            loading: true,
            deleteFlag: false,
            addOrEdit: false,
            linkIdList: [],
            linkList: [],
            linkForm: {
                id: null,
                linkName: "",
                linkAvatar: "",
                linkIntro: "",
                linkAddress: ""
            },
            keywords: null,
            current: 1,
            size: 10,
            count: 0
        };
    },
    methods: {
        selectionChange(linkList) {
            this.linkIdList = [];
            linkList.forEach(item => {
                this.linkIdList.push(item.id);
            });
        },
        searchLinks() {
            this.current = 1;
            this.listLinks();
        },
        sizeChange(size) {
            this.size = size;
            this.listLinks();
        },
        currentChange(current) {
            this.current = current;
            this.listLinks();
        },
        deleteLink(id) {
            var param = {};
            if (id == null) {
                param = {data: this.linkIdList};
            } else {
                param = {data: [id]};
            }
            this.axios.delete("/api/admin/links", param).then(({data}) => {
                if (data.flag) {
                    this.$notify.success({
                        title: "成功",
                        message: data.message
                    });
                    this.listLinks();
                } else {
                    this.$notify.error({
                        title: "失败",
                        message: data.message
                    });
                }
                this.deleteFlag = false;
            });
        },
        openModel(link) {
            if (link != null) {
                this.linkForm = JSON.parse(JSON.stringify(link));
                this.$refs.linkTitle.innerHTML = "修改友链";
            } else {
                this.linkForm.id = null;
                this.linkForm.linkName = "";
                this.linkForm.linkAvatar = "";
                this.linkForm.linkIntro = "";
                this.linkForm.linkAddress = "";
                this.$refs.linkTitle.innerHTML = "添加友链";
            }
            this.addOrEdit = true;
        },
        addOrEditCategory() {
            if (this.linkForm.linkName.trim() == "") {
                this.$message.error("友链名不能为空");
                return false;
            }
            if (this.linkForm.linkAvatar.trim() == "") {
                this.$message.error("友链头像不能为空");
                return false;
            }
            if (this.linkForm.linkIntro.trim() == "") {
                this.$message.error("友链介绍不能为空");
                return false;
            }
            if (this.linkForm.linkAddress.trim() == "") {
                this.$message.error("友链地址不能为空");
                return false;
            }
            this.axios.post("/api/admin/links", this.linkForm).then(({data}) => {
                if (data.flag) {
                    this.$notify.success({
                        title: "成功",
                        message: data.message
                    });
                    this.listLinks();
                } else {
                    this.$notify.error({
                        title: "失败",
                        message: data.message
                    });
                }
                this.addOrEdit = false;
            });
        },
        listLinks() {
            this.axios
                .get("/api/admin/links", {
                    params: {
                        current: this.current,
                        size: this.size,
                        keywords: this.keywords
                    }
                })
                .then(({data}) => {
                    this.linkList = data.data.recordList;
                    this.count = data.data.count;
                    this.loading = false;
                });
        }
    }
};
</script>
